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Note 12 - Stock-based Compensation Stock - Stock-based Compensation Expense (Details) - USD ($)
3 Months Ended 9 Months Ended
Sep. 30, 2024
Sep. 30, 2023
Sep. 30, 2024
Sep. 30, 2023
Share based compensation expense $ 271,215 $ 109,168 $ 1,068,011 $ 242,660
Research and Development Expense [Member]        
Share based compensation expense 42,224 30,737 146,358 101,885
General and Administrative Expense [Member]        
Share based compensation expense $ 228,991 $ 78,431 $ 921,653 $ 140,775